BLI201 - Spray Red Laser Ink (Copper Tone) for Metal Marking - CO2 Laser - Fiber Laser - YAG, 100% Satisfaction Guarantee, Durable, Permanent, High Contrast, Bright Laser Inks

This works very good on metal my laser is the 10 Watt it works really really well

Seriously—don’t try to laser without this! I searched high and low, watched countless YouTube videos, read all the comments… and still saw so many people struggling to get their engraving right. (In my case, specifically with the WEcreat laser.) This product solved it for me! I even went back and told others about it. If you're stuck trying to get clean, precise engravings—this is the missing piece.

Worked as advertised.

This copper marking powder spray is really neat and the end results are unique, depending on surface applied too and setting used to burn can be from bright copper to dull red reminiscent of rust. Application is easy but once dry the marker powder can be wiped off very easily. Many variables to adjust to get different results but when you have your settings right the results are stunning.

In the instructions to this product, both on the label and on the company's website, it is recommended only for CO2, fiber and YAG lasers, not for diode lasers. So I was trying it with my 10 watt xTool D1 diode laser purely as an experiment. To my surprise I found that it worked fine, and without having to use extremely low speeds at 100% power. Testing on a sheet of stainless steel, I started out with slow speeds at 100% power, and first increased the speed and then decreased the power. Interestingly, with this "copper tone" spray, the markings left by the laser came out black with my first tests. Only after increasing the speed and decreasing the power did I start to get something of a copper color. Apparently more laser power burns the pigment and/or binding agent and makes the designs dark. So if you want copper-colored designs with this product, there's actually a fairly narrow range of settings that will work for that. I can give you the figures that worked for my laser, but you'll have to experiment to get the best ones for yours. And the figures are: At 100% power, I got nice dark black marks at 1000 mm/minute and slower. 3000 mm/minute at 75% power seemed to be about optimum for getting copper-colored marks. At 3000 mm/minute and 50% power the markings seemed to be fading a little. At 5000 mm/minute and 50% power the markings were definitely faded. It should be noted that products like this work by bonding a pigment onto the metal surface; they don't engrave or etch the surface. However, as long as the laser settings are good, the printed designs will not scrape off. To remove them requires aggressive sanding that removes a layer of the metal surface as well. My guess is that some kind of chemical bonding with the stainless steel is taking place. (Sorry I have no picture accompanying this review, but my test sheet ended up as a jumbled mess.)